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COPYING.txt
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COPYING.txt
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===============================
The yt project licensing terms
===============================
yt is licensed under the terms of the Modified BSD License (also known as New
or Revised BSD), as follows:
Copyright (c) 2013-, yt Development Team
Copyright (c) 2006-2013, Matthew Turk <[email protected]>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or
other materials provided with the distribution.
Neither the name of the yt Development Team nor the names of its
contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
About the yt Development Team
-----------------------------
Matthew Turk began yt in 2006 and remains the project lead. Over time yt has
grown to include contributions from a large number of individuals from many
diverse institutions, scientific, and technical backgrounds.
Until the fall of 2013, yt was licensed under the GPLv3. However, with consent
from all developers and on a public mailing list, yt has been relicensed under
the BSD 3-clause under a shared copyright model. For more information, see:
https://mail.python.org/archives/list/[email protected]/thread/G4DJDDGB4PSZFJVPWRSHNOSUMTISXC4X/
All versions of yt prior to this licensing change are available under the
GPLv3; all subsequent versions are available under the BSD 3-clause license.
The yt Development Team is the set of all contributors to the yt project. This
includes all of the yt subprojects.
The core team that coordinates development on BitBucket can be found here:
http://bitbucket.org/yt_analysis/
Our Copyright Policy
--------------------
yt uses a shared copyright model. Each contributor maintains copyright
over their contributions to yt. But, it is important to note that these
contributions are typically only changes to the repositories. Thus, the yt
source code, in its entirety is not the copyright of any single person or
institution. Instead, it is the collective copyright of the entire yt
Development Team. If individual contributors want to maintain a record of what
changes/contributions they have specific copyright on, they should indicate
their copyright in the commit message of the change, when they commit the
change to one of the yt repositories.